how do i know they are the best?
because i tried nearly every one what is on the market
and i work with panoramas since several years.
and most 360 panoramas i shoot with a small pocket ricoh r6 without a tripod and they turn out mostly beautiful.

While I'm sure that people have seen it before me, over the past few hours of fooling around when I should be working, I have found Picnik to be an EXCELLENT basic photo editing tool. It links to my SmugMug account and apparently can grab from any online photo sharing site.

It may put some people off, but it has been bought by Google (the company that is).

Actually I use Adobe Photoshop for editing, it may seem a bit complicated first but after a while it helps to achieve great results, but it's interface is not very intuitive so it's not for beginners I think...

Thanks for the incredible list. Extremely specific too. I'll come back here many times I'm sure. I was looking at another list of photo editors, but this one really takes the cake. I'm going to spend some time trying out trials and see what I like the very best. I don't do a lot of photo editing, but I love to play. Here's to tons of hours getting lost in photos. Thanks!